Synthesis and structural characterization of magnesium complexes bearing benzotriazole phenoxide ligands: Photoluminescent properties and catalytic studies for ring-opening polymerization of l-lactide

Chen Yu Li, Jing Kai Su, Chia Jung Yu, Yu En Tai, Chia Her Lin, Bao Tsan Ko*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Magnesium catalysts incorporated by sterically bulky benzotriazole- phenoxide ligands ( CMe2PhBTP -, t-BuBTP - and TMClBTP -) are synthesized and structurally characterized. The reaction of Mg nBu 2 with CMe2PhBTP-H (2.0 mol Eq) in THF produces penta-coordinated monomeric magnesium complex [( CMe2PhBTP) 2Mg(THF)] (1). However, six-coordinated bis-adduct magnesium complexes [( t-BuBTP) 2Mg(THF) 2] (2) and [( TMClBTP) 2 Mg(THF) 2] (3) result from treatments of Mg nBu 2 with t-BuBTP-H and TMClBTP-H in THF under the same stoichiometric proportion, in which each Mg center is coordinated by two THF molecules. Optical properties and catalytic studies for l-lactide polymerizations of magnesium complexes 1-3 are investigated. Magnesium complex 3 catalyzes the ring-opening polymerization effectively not only in a controlled fashion but also in an immortal manner, giving polymers with the expected molecular weights and narrow molecular weight distributions.

Original languageEnglish
Pages (from-to)60-65
Number of pages6
JournalInorganic Chemistry Communication
Volume20
DOIs
Publication statusPublished - 2012 Jun
Externally publishedYes

Keywords

  • Catalyst
  • l-Lactide
  • Magnesium complex
  • N,O-Bidentate
  • Photoluminescence
  • Ring-opening polymerization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Synthesis and structural characterization of magnesium complexes bearing benzotriazole phenoxide ligands: Photoluminescent properties and catalytic studies for ring-opening polymerization of l-lactide'. Together they form a unique fingerprint.

Cite this